9.
a.bigger, the biggest
b. small, smaller
c.tall, the tallest
d.bright, the brightest
e.happier, the happiest
f. longer,the longest
10.
a. A cat is slower than a lion but the tortoise is the slowest.
b. In Scandinavia is colder than in Africa but the South Pole is the coldest.
c. Trains are faster than cars but planes are thr fastest.
d. A stone is heavier than wood but iron is the heaviest.
e. Oranges are sweeter than lemons but bananas are the sweetest.
